- dark slide
- dashing vessel
- daughter nucleus
- dead weight
- deaf-muteness
- Debye force
- debye model
- deficit reactivity
- definition
- deformation gradient
- degreasing agent
- delay factor
- delay tank
- delayed hardening
- delorenzite
- Delphi detector
- delta
- delta rays
- deafness
- Debye frequency
- decaying wave
- declination circle
- declinator
- declinometer
- decomposable
- deflection tube
- deflector
- decentre
- decomposition
- decurl
- deep-freeze
- delay component
- delay unit
- demineralizing plant
- dendrimer
- densimeter
- density bottle
- density level
- dephasing
- depolarise
- depolarization
- depolarizer
- depth dose
- detent
- develop
- developed luminosity
- developing clip
- developingtongs
- device
- density
- density measurement
- dent
- dephase
- depletion
- depolarize
- desensitizer
- detectivity
- deternatable
- developer
- developing frame
- diathermal wall
- dichroic mirror
- dielectric swelling
- Dieterici equation
- differential
- differential pulley
- design criterion
- deviation
- diameter increment
- diamgantism
- diamondoid
- diaphragm
- diathermancy
- diatomic scale
- dichroic fog
- difference tone
- diffraction pattern
- diffuse density
- diffused layer
- diffused photodiode
- diffusing panel
- diffusion process
- digester gas
- dilatation method
- dilatometer
- diminished interval
- DIN speed
- diode
- diopter
- dioptre
- dioptric
- depress
- depression
- desensitizing bath
- designation
- detonation
- developed picture
- developing path
- developing tank
- diplolar